2022 Biology
- Sources of air pollutants are?
- A. industrial chimneys, burning fossil oils and river dams
- B. sulphur dioxide, acid rain and pesticides
- C. sulphur dioxide, vehicle exhausts, and aerosols
- D. sewage, smoke and old vehicles
- The body of a snail is divided into head?
- A. thorax and abdomen
- B. visceral mass and abdomen
- C. thorax and foot
- D. visceral mass and foot
- An adaptation for defense in animals is?
- A. croaking of a male toad
- B. basking in lizard
- C. spines in porcupine fish
- D. huddling together of penguins
- The movement of Euglena towards the source of light is a?
- A. tropic movement
- B. tactic movement
- C. nastic movement
- D. kinetic movement
- During mitosis, the stage at which chromosomes lines up around the equator is?
- A. telophase
- B. metasphase
- C. anaphase
- D. prophase
- The waste product of insects is?
- A. uric acid
- B. urine
- C. Mucilage
- D. sweat
- Succession that occurs on an abandoned farm land is?
- A. tertiary
- B. secondary
- C. primary
- D. climax
- In Nigeria, Southern Guinea Savanna is found in?
- A. Borno and Sokoto
- B. Kogi and Kwara
- C. Kaduna and Cross River
- D. Kano and Niger
- Which of the following is associated with the dark stage of photosynthesis?
- A. Assimilation of Carbon(IV)oxide
- B. Photophosphorylation
- C. Photolysis
- D. Excitation of chlorophyll
- The part of mammalian skin that excretes metabolic wastes is?
- A. sweat gland
- B. horny layer
- C. Malpighian layer
- D. sebaceous gland
- The feeding relationship that exists between a tick and a cow is?
- A. parasitism
- B. mechanism
- C. saprophytism
- D. commensalism
- The type of fruit that is formed from a single flower having several free carpels is?
- A. indehiscent fruit
- B. aggregate fruit
- C. simple fruit
- D. fleshy fruit
- The part that performs urinogenital function in the male reproductive system is the?
- A. seminal vesacle
- B. epididymis
- C. urethra
- D. ureter
- The components of blood in man are?
- A. red blood cells, white blood cells, plasma and water
- B. red blood cells, white blood cells, and plasma
- C. red blood cells, white blood cells, and platelets
- D. red blood cells, white blood cells, plasma and platelets
- The development of big muscles by a wrestler is an example of?
- A. acquired characteristics
- B. inherited characteristics
- C. mutation
- D. atrophication
- Lack of nucleus is a feature in?
- A. osteocyte
- B. neurone
- C. erythrocyte
- D. leucocyte
- A universal recipient of blood belongs to blood group?
- A. O
- B. AB
- C. B
- D. A
- The internal structure of a leaf that has larger air space is?
- A. palisade mesophyll
- B. epidermis
- C. spongy mesophyll
- D. vascular bundles
- An example of arboreal animal is?
- A. squirrels
- B. duck
- C. pig
- D. rat
- The movement of sugars from the leaf to other parts of plant is?
- A. guttation
- B. transpiration
- C. transportation
- D. translocation
- Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?
- A. the cells of their epidermis have no blood capillaries
- B. they have well developed respiratory structures
- C. their cylindrical shape gives high surface area to volume ratio
- D. their surface area to volume ratio is very low
- The structure that joins the two strands of a chromosome together is the?
- A. spindle
- B. cellulose
- C. centromere
- D. chromatid
- When a colour blind woman marries a normal man, what is the probability of their son being colour blind?
- A. 25%
- B. 100%
- C. 50%
- D. 0%
- The correct pathway for blood flow from the heart to the tissues of mammals is?
- A. heart-arteriole-artery-tissues
- B. heart-artery-arteriole-tissues
- C. heart-vein-venule-tissues
- D. heart-venule-vein-tissues
- Tall trees with buttress roots and evergreen leaves are characteristics features of?
- A. temperate grass land
- B. Southern Guinea Savanna
- C. tropical rain forests
- D. Northern Guinea savanna
- The genes crossing over occurs during?
- A. fertilization
- B. mutation
- C. mitosis
- D. meiosis
- In genetic counseling, a man with hemoglobin formation HbA HbS is most preferred to marry a woman of?
- A. HbA HbA
- B. HbC HbH
- C. HbM HbF
- D. HbS HbS
- An ecological instrument used to measure wind direction is?
- A. Secchi disc
- B. wind vane
- C. anemometer
- D. slope gauge
- The growth of mucor on a piece of bread is?
- A. scavenging
- B. commensalism
- C. autotrophism
- D. saprophytism
- Conversion of atmosphere carbon into chemical bond energy occurs during the process of?
- A. transpiration
- B. photosynthesis
- C. digestion
- D. respiration
- The display of male agama lizard is to?
- A. scare predators
- B. regulate body temperature
- C. attract female for mate
- D. give invite to intruders
- The end product of the digestion of carbohydrate is?
- A. amino acid
- B. glycerol
- C. glucose
- D. sucrose
- The sum total of all observable features of an organism is?
- A. phenotype
- B. heterozygous
- C. genotype
- D. homozygous
- Pentadactyl plan of the fore limbs of frog, bird, horse, whale and man is a proof of?
- A. spontaneous generation
- B. evolution
- C. locomotion
- D. creation
- The under secretion of thyroxine in children results in?
- A. goitre
- B. gigantism
- C. kwashiorkor
- D. cretinism
- Petaloid sepals serve the function of?
- A. carrying out photosynthesis
- B. attracting pollinating agents to a flower
- C. retaining pollen grains in the corolla tubes
- D. protecting the inner floral parts of the flower
- The system of classification in which there are seven hierarchies from kingdom to species was introduced by?
- A. Felix Dujardin
- B. Carolus Linneus
- C. Theodore Schwann
- D. Charles Darwin
- An adaptive feature of camel to the desert is?
- A. ability to increase sweat production
- B. ability to pass high amount of urine
- C. ability to tolerate low degree of dehydration
- D. ability to tolerate high degree of dehydration
39.
The part labelled II is?
- A. pellicle
- B. cytoplasmic connections
- C. flagella
- D. cells
40.
The organism above is?
- A. chlamydomonas
- B. algae
- C. volvox
- D. euglena
41.
The beak structure of the organism is best adapted for?
- A. pecking grass
- B. killing and picking fish
- C. pecking woods
- D. sucking nectars
- One of the functions of water in seed germination is to?
- A. dilute the embryo
- B. make the soil wet and soft
- C. activate the enzymes
- D. promote aerobic respiration